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Elecrow CrowPanel 4.2 by Elecrow

This CrowPanel ESP32 4.2” E-paper HMI display adopts advanced active matrix electrophoretic display technology and is equipped with a hard-coated anti-glare surface, which can keep the content clearly visible even in the sun, perfectly reproducing the appearance and reading experience of traditional paper. The built-in ESP32-S3 chip as the main control ensures powerful performance and fast and stable data transmission through the SPI interface. With a high resolution of 400*300, it provides a delicate display effect and adopts a classic black and white dual-color display to adapt to various application scenarios. It is also equipped with multiple interface and button designs, including TF card slot, BAT interface, UART0 interface, 2x10 pin GPIO interface, back button, home button and rotary switch switch, which is convenient for users to develop and operate. The white acrylic shell is not only beautiful but also protects the screen.

Based on the ESP32 chip, another highlight is its wide compatibility. It is compatible with three development environments: Arduino IDE, ESP IDF, and MicroPython, simplifying the secondary development process. Also, its ultra-wide viewing angle design allows you to enjoy the same brilliant image from any angle. The ultra-low power consumption feature consumes only a small amount of power when refreshing, ensuring long-lasting battery life. Pure reflection mode means no backlight is required, and information remains clearly visible after power failure, without worrying about information loss.

Due to its excellent characteristics such as low power consumption, high contrast and high reflectivity, this e-ink screen is widely used in shelf labels, price tags, badges, smart labels, smart home devices, e-readers, smart wearable devices and other portable devices, and is an ideal choice for various smart devices and applications.

Technical Details

  • 4.2-inch E-Paper display, 400*300 resolution, black and white, using SPI interface communication;
  • ESP32-S3 as the main chip, frequency up to 240MHz;
  • Pure reflection mode, no backlight required, completely relying on light reflection to display content, and the displayed content will not be lost even if the power is off;
  • Hard-coated anti-glare display surface, which can keep the content visible even under direct sunlight;
  • High contrast and high reflectivity provide a clearer and more vivid visual experience;
  • Ultra-low power consumption and partial refresh function, significantly saving energy and extending battery life;
  • Support full viewing angle, clearly visible from any angle;
  • Rich buttons and interfaces (such as GPIO interface, UART interface, home button, etc.) for easy development and operation；
  • Equip with Arduino IDE, ESP IDF, and MicroPython development environment for a smooth development experience

Specifications

  • MCU: ESP32-S3-WROOM-1-N8R8
  • Power Supply: lithium battery, USB Type-C
  • Supply Voltage: 3~5v
  • Operating Temperature: 0~50℃
  • Storage Temperature: -25~70℃
  • Display Resolution: 300(H)x400(V) Pixel
  • Connection Method: Wi-Fi, BLE
  • Screen Size: 4.2 Inch
  • Active Area: 84.8x63.6
  • Pixel Pitch: 0.212x0.212

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CircuitPython 9.2.7

This is the latest stable release of CircuitPython that will work with the Elecrow CrowPanel 4.2. Use this release if you are new to CircuitPython.

Release Notes for 9.2.7

DOWNLOAD .BIN NOW
Modules included in this download _asyncio _bleio _eve _pixelmap adafruit_bus_device adafruit_pixelbuf aesio alarm analogbufio analogio array atexit audiobusio audiocore audiomixer audiomp3 binascii bitbangio bitmapfilter bitmaptools board builtins builtins.pow3 busdisplay busio busio.SPI busio.UART canio codeop collections countio digitalio displayio dualbank epaperdisplay errno espidf espnow espulp fontio fourwire framebufferio frequencyio getpass gifio hashlib i2cdisplaybus io ipaddress jpegio json keypad keypad.KeyMatrix keypad.Keys keypad.ShiftRegisterKeys keypad_demux keypad_demux.DemuxKeyMatrix locale math max3421e mdns memorymap microcontroller msgpack neopixel_write nvm onewireio os os.getenv paralleldisplaybus ps2io pulseio pwmio rainbowio random re rgbmatrix rotaryio rtc sdcardio sdioio select sharpdisplay socketpool socketpool.socketpool.AF_INET6 ssl storage struct supervisor synthio sys terminalio tilepalettemapper time touchio traceback ulab usb vectorio warnings watchdog wifi zlib

Features: Bluetooth/BTLE, Battery Charging, Display, USB-C, Wi-Fi

CircuitPython 10.0.0-alpha.2

This is the latest development release of CircuitPython that will work with the Elecrow CrowPanel 4.2.

Alpha development releases are early releases. They are unfinished, are likely to have bugs, and the features they provide may change. Beta releases may have some bugs and unfinished features, but should be suitable for many uses. A Release Candidate (rc) release is considered done and will become the next stable release, assuming no further issues are found.

Please try alpha, beta, and rc releases if you are able. Your testing is invaluable: it helps us uncover and find issues quickly.

Release Notes for 10.0.0-alpha.2

DOWNLOAD .BIN NOW
Modules included in this download _asyncio _bleio _eve _pixelmap adafruit_bus_device adafruit_pixelbuf aesio alarm analogbufio analogio array atexit audiobusio audiocore audiomixer audiomp3 binascii bitbangio bitmapfilter bitmaptools board builtins builtins.pow3 busdisplay busio busio.SPI busio.UART canio codeop collections countio digitalio displayio dualbank epaperdisplay errno espidf espnow espulp fontio fourwire framebufferio frequencyio getpass gifio hashlib i2cdisplaybus io ipaddress jpegio json keypad keypad.KeyMatrix keypad.Keys keypad.ShiftRegisterKeys keypad_demux keypad_demux.DemuxKeyMatrix locale lvfontio math max3421e mdns memorymap microcontroller msgpack neopixel_write nvm onewireio os os.getenv paralleldisplaybus ps2io pulseio pwmio rainbowio random re rgbmatrix rotaryio rtc sdcardio sdioio select sharpdisplay socketpool socketpool.socketpool.AF_INET6 ssl storage struct supervisor synthio sys terminalio tilepalettemapper time touchio traceback ulab usb vectorio warnings watchdog wifi zlib

Features: Bluetooth/BTLE, Battery Charging, Display, USB-C, Wi-Fi

Absolute Newest

Every time we commit new code to CircuitPython we automatically build binaries for each board and language. The binaries are stored on Amazon S3, organized by board, and then by language. These releases are even newer than the development release listed above. Try them if you want the absolute latest and are feeling daring or want to see if a problem has been fixed.

Previous Versions of CircuitPython

All previous releases of CircuitPython are available for download from Amazon S3 through the button below. For very old releases, look in the OLD/ folder for each board. Release notes for each release are available at GitHub button below.

Older releases are useful for testing if you something appears to be broken in a newer release but used to work, or if you have older code that depends on features only available in an older release. Otherwise we recommend using the latest stable release.

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